31results about How to "Increase wind capacity" patented technology

The invention discloses a yawing angle positioning control method based on a time partition and a yawing sector. The method comprises the following steps: 1, variable data are collected, a yawing judgment module judges the variable data, and a main control system controls yawing, wherein for variable data collection, a wind speed, a wind direction, a yawing angle and a yawing motor action instruction conventional control variable parameter of a unit are collected and monitored, variable data of a wind speed mean value, a wind direction beta, a yawing angle mean value alpha and a yawing frequency accumulated value N are obtained, and the variable data are taken as input variables of the yawing judgment module. Variables such as the wind speed, the wind direction, the yawing angle, a yawingmotor action instruction and system time of a unit are collected, the maximum value of the yawing frequency of the unit in a certain time period is obtained, and the unit is in the dominant wind direction in a specific yawing sector at the moment; yawing wind alignment is realized in advance by combining a single machine with a time partition, so that the wind catching capability of the unit is improved, and the generating capacity loss caused by yawing under strong wind is reduced.

The invention discloses a double-impeller type horizontal-axis wind turbine. The double-impeller type horizontal-axis wind turbine comprises two impellers, a supporting base, a tower, a hollow shaft, a solid shaft and two electric generators. The two impellers are symmetrically installed on the left side face and the right side face of the supporting base through bearings. The solid shaft is installed inside the hollow shaft through a bearing. The periphery of the hollow shaft is installed inside the tower through a bearing. The supporting base is installed at the top of the tower, and the tower serves as a supporting piece of the whole device. The top of the hollow shaft and the top of the solid shaft are installed at the inner bottom and the top of the supporting base through bearings correspondingly. The top of the hollow shaft and the top of the solid shaft are each provided with a big bevel gear. An impeller shaft of each impeller is provided with a small bevel gear which are in engaged transmission with the two big bevel gears at the same time. The hollow shaft and the solid shaft are connected with the corresponding electric generators at the bottom of the tower. According to the double-impeller type horizontal-axis wind turbine, the front impeller and the rear impeller generate electricity at the same time, wind capturing capacity of the wind turbine is improved, generated power is greatly increased, the utilization rate of wind energy is also increased, and the application prospects are good.

The embodiment of the invention provides a lengthened blade forming method, a prefabricated blade tip and a lengthened blade. The lengthened blade forming method comprises the following steps that a supporting assembly is laid, specifically, the supporting assembly with a preset height is laid on the outer surface of a first connecting part, so that the supporting assembly protrudes outwards fromthe outer surface of the first connecting part; a gluing layer is formed, the outer surface of the first connecting part is coated with a structural adhesive so as to form the gluing layer on the first connecting part; the prefabricated blade tip is installed, the prefabricated blade tip is provided with a second connecting part and a blade tip part, wherein the second connecting part and the blade tip part are sequentially connected in the axial direction of the prefabricated blade tip, the second connecting part is provided with a hollow space which is sleeved on the first connecting part, the prefabricated blade tip is installed on an original blade through the second connecting part, the gluing layer is located between the first connecting part and the second connecting part, so that the first connecting part and the second connecting part bond through the gluing layer; and the gluing layer is solidified, and the gluing layer is solidified to obtain the lengthened blade. Accordingto the method, the connecting strength between the prefabricated blade tip and the original blade can be improved, and the failure risk of the lengthened blade can be reduced.

The invention discloses a wind turbine blade with a trailing edge flat plate structure. The wind turbine blade comprises a blade body and is characterized in that the trailing edge flat plate is arranged on the trailing edge of the blade body and is arranged adjacent to the trailing edge of the blade body. Compared with the like blade without the trailing edge flat plate structure, the wind turbine blade disclosed by the invention has the advantage that the wind catching capability is improved by 3-5 percent; the trailing edge flat plate structure can be added at the initial stage of the blade design or can be added when the blade which is mounted on the turbine is reformed; the wind turbine blade is simple and convenient for processing.

The invention relates to a telescopic wind turbine blade. The telescopic wind turbine blade comprises a blade root telescopic part, a sealing partition plate, an air cylinder barrel, a pressure regulating piston and a driving mechanism, wherein the blade root telescopic part is a root cylinder section of wind turbine blade; the sealing partition plate is used for sealing the bottom end of the blade root expansion part so as to enable the blade root telescopic part to form a piston form; the two ends of the air cylinder barrel are opened, the air cylinder barrel is fixed on a hub of the wind turbine, and the blade root telescopic part is assembled in one end of the air cylinder barrel; the pressure regulating piston is arranged at the other end of the inner cavity wall of the air cylinder barrel, so that the sealing end part of the blade root telescopic part and the pressure regulating piston define a sealing space in the interior of the air cylinder barrel; and the driving mechanism isused for driving the pressure regulating piston to extend and contract in the other end of the air cylinder barrel so as to adjust the pressure in the air cylinder barrel, and the blades of the windturbine realize the expansion and contraction in the rotating process. By adopting the structure, the blades can be stretched and retracted for a limited stroke along with the rotation period, so thatthe wind catching load is limited, and the load of the blades is balanced, thereby reducing the alternating load.

The invention discloses a cabinet air conditioner and a control method thereof, wherein the cabinet air conditioner comprises a housing, a positive air outlet structure and a top air outlet structure; at least one air flue is formed in the housing; the positive air outlet structure is equipped with a positive air outlet which communicates with the air flue; the positive air outlet structure is connected with a first rotary structure; the top air outlet structure is arranged at the upper end of the housing, and is provided with a top air outlet which communicates with the air flue; the top air outlet structure is connected with a second rotary structure; the positive air outlet structure comprises a positive air outlet frame; the positive air outlet frame comprises an air baffle plate; a positive air outlet is formed in the air baffle plate; an avoidance hole which is matched with the positive air outlet is formed in the housing; the first rotary structure comprises a first drive motor, a first drive gear and a gear ring; the gear ring is fixedly connected with the positive air outlet frame; and the first drive gear is engaged with the gear ring for driving the positive air outlet frame to rotate in the housing, so that the positive air outlet is opposite to the avoidance hole or the avoidance hole is sealed by the air baffle plate. The cabinet air conditioner disclosed by the invention is good in air regulating effect, and is simple and stable in structure.

The invention discloses an individual pitch control device for a vane. The individual pitch control device comprises a vane root, an air cylinder barrel, a pressure regulating piston, a driving mechanism and a pitch control mechanism, wherein the vane root is cylindrical and an opening in the end part of the vane root is sealed in a piston form; the air cylinder barrel is fixed to a wheel hub of awind turbine, two ends of the air cylinder barrel are opened, and the vane root and the air cylinder barrel are in hermetical sliding fit; the pressure regulating piston is arranged at the other endof an inner cavity wall of the air cylinder barrel; the driving mechanism is used for driving the pressure regulating piston to adjust the pressure in the air cylinder barrel; and the pitch control mechanism comprises a spiral driving part connecting the vane root and the air cylinder barrel, and when the vane root shrinks in an inner cavity of the air cylinder barrel, the spiral driving part automatically drives the vane to reverse relative to the air cylinder barrel. The individual pitch control device can inhibit an alternating load reliably with a low cost.

The invention discloses a variable pitch device for a wind turbine. The variable pitch device comprises a blade root, an air cylinder barrel, a pressure adjusting piston and a driving mechanism, wherein the blade root is a column-shaped body; an opening in the end of the blade root is sealed; the air cylinder barrel is used for fixing a hub of the wind turbine; two ends of the air cylinder barrel are opened; one end of the wall of an inner cavity of the air cylinder barrel is matched with the column-shaped body of the blade root by a spiral groove and a spiral guide rail structure; the pressure regulating piston is arranged at the other end of the wall of the inner cavity of the air cylinder barrel, and a sealing space is defined by a sealing end of the blade root and the pressure adjusting piston in the air cylinder barrel; and the driving mechanism is used for driving the pressure adjusting piston to expand and retract in the other end of the air cylinder barrel to further adjust the pressure in the air cylinder barrel; a blade of the wind turbine drives the blade root to expand and retract in the inner cavity of the air cylinder barrel under the self gravity and the air pressure action in the air cylinder barrel in the rotating process, and when the blade root expands and retracts, the spiral groove and the spiral guide rail structure automatically drive the blade to twist. The variable pitch device can reliably inhibit alternating load.

The invention provides a chord length changing device and a blade as well as a chord length change controlling method and controlling system. The chord length changing device is used for changing chord length of the blade of a wind generating set; the chord length changing device comprises a sliding groove, an extension piece and a transmission mechanism, wherein an inlet/outlet is formed in one end of the sliding groove; the extension piece can be extended to predetermined length toward the outer part through the inlet/outlet; and the transmission mechanism is combined with the extension piece, so that the extension piece can be expanded and moved between the outer part of the inlet/outlet and the inner part of the inlet/outlet. According to the chord length changing device disclosed by the invention, the chord length of the blade can be increased at low air speed, and the air catching ability of the blade is increased so as to improve power generation quantity.

The invention discloses an individual pitch control device for a blade root. The individual pitch control device comprises a blade root part, an air cylinder barrel, a pressure regulating piston, a driving mechanism and a pitch control mechanism, the blade root part is cylindrical, an opening in the end part of the blade root part is sealed in the form of a piston, the air cylinder barrel is usedfor being fixed on a hub of a wind turbine, the two ends of the air cylinder barrel are opened, the blade root part is matched with the air cylinder barrel in sealed and sliding mode, the pressure regulating piston is arranged at the other end of the inner cavity wall of the air cylinder barrel, the driving mechanism is used for driving the pressure regulating piston to adjust the pressure in theair cylinder barrel, the pitch control mechanism comprises a spiral guide rail and sliding blocks, the spiral guide rail is arranged on the outer side of the blade root part or the inner wall of the air cylinder barrel, the sliding blocks are fixed to the inner wall of the air cylinder barrel or the outer side of the blade root part and are matched with the spiral guide rail in a sliding mode, a blade of the wind turbine drives the blade root part to telescope in an inner cavity of the air cylinder barrel under the action of the gravity of the blade and the air pressure in the air cylinder barrel in the rotating process, and in the telescoping process, the pitch control mechanism automatically drives the blade to be twisted. According to the individual pitch control device for the blade root, the cost can be reliably lowered, and the alternating load can be reliably restrained.

An upper cover with an upward opening is arranged at the upper end of a machine body frame, a lower cover is arranged at the lower end of the machine body frame, an air outlet cover is detachably connected with the upper cover, a fan assembly is located between the air outlet cover and the upper cover, the upper cover, the machine body frame and the lower cover are communicated, and a fan head assembly is located at an air outlet of the air outlet cover. The water tank is arranged at the lower end of the lower cover; the water evaporation carrier, the filter and the air inlet net are sequentially arranged around the ventilation support of the machine body frame in a detachable mode from inside to outside. A sink is arranged on the inner side of the upper cover, a drain hole in the bottom of the sink is communicated with the upper end of the water evaporation carrier, and the water pump assembly is connected with the sink through a pipeline; when the fan assembly is started, external air enters from the air inlet net, sequentially passes through the filter, the water evaporation carrier and the ventilation support and is exhausted from the air outlet of the air outlet cover. By controlling the fan assembly, the water pump assembly and the fan head assembly, the four-in-one multifunctional experience of air accelerated circulation, fan, humidification and purification can be achieved.

The invention discloses a three-dimensional multi-layer cable box which forms a three-dimensional multi-layer routing space by a multi-layer hemispherical structure and can flexibly adjust the angle of a winding post to be adapted to different erection requirements. The three-dimensional multi-layer cable box is characterized in that one end of a fixing stud is fixedly arranged at the middle of the top of a fixing base, a mounting hole is formed in the highest position of the top of the protective cover, the protective cover sleeves the fixing stud through the mounting hole, the protective cover is of a hemispherical structure, the bottom of the protective cover is flush with the fixing base, the bottom of the protective cover is equidistantly provided with a plurality of threading grooves, the other end of the fixing stud is in threaded connection with a fixing locking cap, the protective cover is sleeved with a plurality of arc-shaped covers, the number of the arc-shaped covers is atleast two, the arc-shaped covers are of a hemispherical structure, the multiple arc-shaped covers are concentric, the multiple arc-shaped covers are gradually increased in diameter from inside to outside, and the bottoms of the arc-shaped covers are flush with the bottom of the protective cover.

The invention discloses a low-resistance mast of a high-speed planing boat. The low-resistance mast of the high-speed planing boat comprises a mast body arranged on the high-speed planing boat, wherein the bottom of the mast body penetrates through a compass deck and is fixedly connected with the top of a cab arranged on the lower part of the compass deck through bolts; the mast body is of a hollow structure; the mast body is made of carbon fiber composite materials; the mast body is thickened from the top of the mast body to the bottom of the mast body in sequence; the mast body comprises a windward side and a leeward side; an included angle between the windward side and the top of the cab is 120-150 degrees; the top of the leeward side is connected with the compass deck through a sling and a hanging ring; and two reinforcing plates are arranged between the leeward side and the compass deck. The mast body made of the carbon fiber composite materials can improve the working stability of a precision electronic instrument in a complex magnetic field environment, and the weight of the mast body can be reduced. Through the mould line design of the mast body, the wind load capacity of the mast body is increased.

The invention provides a blade with a delayed separation tail edge and relates to the technical field of wind power technologies. The blade with the delayed separation tail edge comprises a blade body, a box body and the delayed separation tail edge. The blade body is provided with a tip end, a root end, a front edge and a rear edge. The box body is arranged on the root end in a sleeving manner. The box body further comprises a wing fence and an end plate. The wind fence is arranged on the side, close to the root end, of the blade body in a sleeving manner. The end plate is arranged between the pressure side wall of the box body and the force suction side wall of the box body, and the delayed separation tail edge is connected to the surface of the end plate. Due to the fact that the blade is provided with the box body and the delayed separation tail edge, resistance exerted on the blade is reduced, the wind catching capability of the surface of the blade is improved, the utilization efficiency of wind energy is improved, and the power generation capability of a unit can be effectively improved.